It is reported that another new school _____ in that area.a) has been set up b) was set up 选哪个

题目

It is reported that another new school _____ in that area.a) has been set up b) was set up 选哪个
觉得好像两个都可以啊
但是完成时不是要对现在构成影响么，这个好像就是一般的消息一般的说法啊，用简单的过去式不行么？

答案

已经有结果了,表示动作已经完成,应该选a) has been set up
用简单过去时不行.因为set up 是瞬间动词.was set up 不是简单的过去时,而且被动语态